.mu_box {
  .backToIndex {
    font-size: 18px;
    float: left;
    margin-left: 10px;
    margin-top: 10px;
    em {
      font-size: 24px;
    }
  }
  padding-left: 20px;
  padding-right: 20px;
}

.notice {
  margin-top: 5px;
  margin-bottom: 20px;
  text-align: center;
}

h1 {
  text-align: center;
}

hr {
  margin-bottom: 20px;
}

/* question_box开始 */
.mu_box .question_box {
  font-size: 17px;
  border: 2px solid #bbb9b9;
  padding: 15px 20px;
}

.question_box {
  text-align: left;
  margin: 0 25px 18px 25px;
  .red {
    float: left;
    width: 50px;
    // background-color: red;
  }
  .green {
    float: left;
    width: 500px;
    // background-color: green;
  }
  .blue {
    float: left;
    // background-color: blue;
  }
  .question_type {
    margin-bottom: 15px;
    font-weight: bold;
  }
}
/* question_box 模板
<div class="question_box clearfix">
    <div class="red">
          Q&nbsp;<em>1</em>
    </div>
    <div class="green">
          <div class="question_type">单选题</div>
          <div>选项一</div>
          <div>选项二</div>
    </div>
    <div class="blue">
          <div class="question_type">数据占比</div>
    </div>
</div>
*/
/* question_box结束 */